diff --git a/crates/ml/src/feature_cache.rs b/crates/ml/src/feature_cache.rs
index 8cc20197a..9414cba26 100644
--- a/crates/ml/src/feature_cache.rs
+++ b/crates/ml/src/feature_cache.rs
@@ -17,7 +17,7 @@
 //!
 //! let cache_key = calculate_cache_key(
 //!     Path::new("test_data/ES_FUT_180d.parquet"),
-//!     Path::new("test_data/mbp10"),
+//!     Path::new("test_data/mbp10-fixtures"),
 //!     50, // warmup period
 //! )?;
 //!
@@ -630,7 +630,7 @@ mod tests {
     fn test_cache_key_deterministic() {
         // Cache key should be deterministic for same inputs
         let parquet = PathBuf::from("test_data/ES_FUT_180d.parquet");
-        let mbp10 = PathBuf::from("test_data/mbp10");
+        let mbp10 = PathBuf::from("test_data/mbp10-fixtures");
 
         if parquet.exists() && mbp10.exists() {
             let key1 = calculate_cache_key(&parquet, &mbp10, 50).unwrap();
@@ -643,7 +643,7 @@ mod tests {
     #[test]
     fn test_cache_key_varies_with_inputs() {
         let parquet = PathBuf::from("test_data/ES_FUT_180d.parquet");
-        let mbp10 = PathBuf::from("test_data/mbp10");
+        let mbp10 = PathBuf::from("test_data/mbp10-fixtures");
 
         if parquet.exists() && mbp10.exists() {
             let key1 = calculate_cache_key(&parquet, &mbp10, 50).unwrap();
diff --git a/crates/ml/src/trainers/dqn/data_loading.rs b/crates/ml/src/trainers/dqn/data_loading.rs
index eb014f7e1..442575d5a 100644
--- a/crates/ml/src/trainers/dqn/data_loading.rs
+++ b/crates/ml/src/trainers/dqn/data_loading.rs
@@ -135,7 +135,7 @@ impl DQNTrainer {
         // TRY CACHE FIRST
         if let Some(cache_dir) = &self.feature_cache_dir {
             let parquet_path_obj = Path::new(parquet_path);
-            let mbp10 = Path::new("test_data/mbp10");
+            let mbp10 = Path::new("test_data/mbp10-fixtures");
 
             info!("🔍 Checking feature cache...");
 
diff --git a/crates/ml/tests/dqn_feature_cache_test.rs b/crates/ml/tests/dqn_feature_cache_test.rs
index 4cb9d95d2..b3498c662 100644
--- a/crates/ml/tests/dqn_feature_cache_test.rs
+++ b/crates/ml/tests/dqn_feature_cache_test.rs
@@ -228,7 +228,7 @@ async fn test_cache_creation_success() -> Result<()> {
     // Create cache
     let result = create_feature_cache(
         Path::new("test_data/ES_FUT_180d.parquet"),
-        Path::new("test_data/mbp10"),
+        Path::new("test_data/mbp10-fixtures"),
         &cache_dir,
         50,
     ).await;
@@ -294,7 +294,7 @@ async fn test_cache_loading_matches_original() -> Result<()> {
     // Create cache
     create_feature_cache(
         Path::new("test_data/ES_FUT_180d.parquet"),
-        Path::new("test_data/mbp10"),
+        Path::new("test_data/mbp10-fixtures"),
         &cache_dir,
         50,
     )
@@ -305,7 +305,7 @@ async fn test_cache_loading_matches_original() -> Result<()> {
     let (cached_train, cached_val) = load_features_from_cache(
         &cache_dir,
         Path::new("test_data/ES_FUT_180d.parquet"),
-        Path::new("test_data/mbp10"),
+        Path::new("test_data/mbp10-fixtures"),
         50,
     )
     .await
@@ -490,7 +490,7 @@ async fn test_hyperopt_with_cache() -> Result<()> {
     // Pre-create cache
     create_feature_cache(
         Path::new("test_data/ES_FUT_180d.parquet"),
-        Path::new("test_data/mbp10"),
+        Path::new("test_data/mbp10-fixtures"),
         &cache_dir,
         50,
     )
@@ -509,7 +509,7 @@ async fn test_hyperopt_with_cache() -> Result<()> {
         let (_train, _val) = load_features_from_cache(
             &cache_dir,
             Path::new("test_data/ES_FUT_180d.parquet"),
-            Path::new("test_data/mbp10"),
+            Path::new("test_data/mbp10-fixtures"),
             50,
         )
         .await
@@ -566,7 +566,7 @@ async fn test_cache_performance_benchmark() -> Result<()> {
     let start = Instant::now();
     create_feature_cache(
         Path::new("test_data/ES_FUT_180d.parquet"),
-        Path::new("test_data/mbp10"),
+        Path::new("test_data/mbp10-fixtures"),
         &cache_dir,
         50,
     )
@@ -590,7 +590,7 @@ async fn test_cache_performance_benchmark() -> Result<()> {
         let (_train, _val) = load_features_from_cache(
             &cache_dir,
             Path::new("test_data/ES_FUT_180d.parquet"),
-            Path::new("test_data/mbp10"),
+            Path::new("test_data/mbp10-fixtures"),
             50,
         )
         .await
@@ -643,7 +643,7 @@ async fn test_missing_cache_graceful_fallback() -> Result<()> {
     let result = load_features_from_cache(
         &nonexistent_cache,
         Path::new("test_data/ES_FUT_180d.parquet"),
-        Path::new("test_data/mbp10"),
+        Path::new("test_data/mbp10-fixtures"),
         50,
     )
     .await;
diff --git a/crates/ml/tests/mbp10_parsing_test.rs b/crates/ml/tests/mbp10_parsing_test.rs
index 379cee221..1f6a29b7f 100644
--- a/crates/ml/tests/mbp10_parsing_test.rs
+++ b/crates/ml/tests/mbp10_parsing_test.rs
@@ -84,10 +84,10 @@ use tracing::{info, warn};
 async fn test_parse_mbp10_single_day() {
     // Test parsing a single day of MBP-10 data
     let parser = DbnParser::new().expect("Failed to create parser");
-    let path = Path::new("../test_data/mbp10/glbx-mdp3-20240102.mbp-10.dbn");
+    let path = Path::new("../test_data/mbp10-fixtures/glbx-mdp3-20240102.mbp-10.dbn.zst");
 
     if !path.exists() {
-        warn!(path = ?path, "Test file not found, run: cd test_data/mbp10 && zstd -d *.zst");
+        warn!(path = ?path, "Test file not found, MBP-10 test data missing");
         panic!("Test data not available");
     }
 
@@ -177,9 +177,9 @@ async fn test_parse_mbp10_multiple_days() {
     let parser = DbnParser::new().expect("Failed to create parser");
 
     let files = vec![
-        "../test_data/mbp10/glbx-mdp3-20240102.mbp-10.dbn",
-        "../test_data/mbp10/glbx-mdp3-20240103.mbp-10.dbn",
-        "../test_data/mbp10/glbx-mdp3-20240104.mbp-10.dbn",
+        "../test_data/mbp10-fixtures/glbx-mdp3-20240102.mbp-10.dbn.zst",
+        "../test_data/mbp10-fixtures/glbx-mdp3-20240103.mbp-10.dbn.zst",
+        "../test_data/mbp10-fixtures/glbx-mdp3-20240104.mbp-10.dbn.zst",
     ];
 
     let mut total_snapshots = 0;
@@ -222,7 +222,7 @@ async fn test_mbp10_parsing_performance() {
     use std::time::Instant;
 
     let parser = DbnParser::new().expect("Failed to create parser");
-    let path = Path::new("../test_data/mbp10/glbx-mdp3-20240102.mbp-10.dbn");
+    let path = Path::new("../test_data/mbp10-fixtures/glbx-mdp3-20240102.mbp-10.dbn.zst");
 
     if !path.exists() {
         warn!("Test file not found, skipping performance test");
@@ -262,7 +262,7 @@ async fn test_mbp10_parsing_performance() {
 async fn test_mbp10_data_quality() {
     // Deep dive into data quality metrics
     let parser = DbnParser::new().expect("Failed to create parser");
-    let path = Path::new("../test_data/mbp10/glbx-mdp3-20240102.mbp-10.dbn");
+    let path = Path::new("../test_data/mbp10-fixtures/glbx-mdp3-20240102.mbp-10.dbn.zst");
 
     if !path.exists() {
         warn!("Test file not found, skipping data quality test");
@@ -320,13 +320,13 @@ async fn test_mbp10_all_files_summary() {
     let parser = DbnParser::new().expect("Failed to create parser");
 
     let files = vec![
-        "../test_data/mbp10/glbx-mdp3-20240102.mbp-10.dbn",
-        "../test_data/mbp10/glbx-mdp3-20240103.mbp-10.dbn",
-        "../test_data/mbp10/glbx-mdp3-20240104.mbp-10.dbn",
-        "../test_data/mbp10/glbx-mdp3-20240105.mbp-10.dbn",
-        "../test_data/mbp10/glbx-mdp3-20240107.mbp-10.dbn",
-        "../test_data/mbp10/glbx-mdp3-20240108.mbp-10.dbn",
-        "../test_data/mbp10/glbx-mdp3-20240109.mbp-10.dbn",
+        "../test_data/mbp10-fixtures/glbx-mdp3-20240102.mbp-10.dbn.zst",
+        "../test_data/mbp10-fixtures/glbx-mdp3-20240103.mbp-10.dbn.zst",
+        "../test_data/mbp10-fixtures/glbx-mdp3-20240104.mbp-10.dbn.zst",
+        "../test_data/mbp10-fixtures/glbx-mdp3-20240105.mbp-10.dbn.zst",
+        "../test_data/mbp10-fixtures/glbx-mdp3-20240107.mbp-10.dbn.zst",
+        "../test_data/mbp10-fixtures/glbx-mdp3-20240108.mbp-10.dbn.zst",
+        "../test_data/mbp10-fixtures/glbx-mdp3-20240109.mbp-10.dbn.zst",
     ];
 
     info!("MBP-10 Data Summary Report");